Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 986 · 40 sums

The trick (Nikhilam Navatashcaramam Dashatah): Write how far each number is from the base (− if below, + if above). Left part: cross-add — one number plus the other’s difference. Right part: multiply the two differences; it must have as many digits as the base has zeros (carry the extra). One above and one below? The right part is negative: take 1 from the left part and write base − that amount.

1. 1.8 × 8 =
2. 2.973 × 994 =
3. 3.1028 × 1024 =
4. 4.103 × 91 =
5. 5.104 × 110 =
6. 6.1028 × 966 =
7. 7.11 × 9 =
8. 8.969 × 992 =
9. 9.87 × 92 =
10. 10.85 × 89 =
11. 11.104 × 110 =
12. 12.112 × 99 =
13. 13.115 × 108 =
14. 14.92 × 92 =
15. 15.1035 × 1011 =
16. 16.13 × 9 =
17. 17.102 × 107 =
18. 18.107 × 89 =
19. 19.104 × 105 =
20. 20.98 × 94 =
21. 21.107 × 109 =
22. 22.106 × 92 =
23. 23.1007 × 1015 =
24. 24.8 × 8 =
25. 25.106 × 110 =
26. 26.9 × 8 =
27. 27.965 × 973 =
28. 28.1008 × 1008 =
29. 29.13 × 11 =
30. 30.101 × 110 =
31. 31.95 × 92 =
32. 32.1022 × 994 =
33. 33.1039 × 989 =
34. 34.1002 × 1032 =
35. 35.98 × 94 =
36. 36.13 × 13 =
37. 37.105 × 113 =
38. 38.110 × 111 =
39. 39.12 × 14 =
40. 40.13 × 6 =

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